Intelligent cooker

Abstract

The invention relates to cooking equipment, and discloses an intelligent cooking machine which comprises a wok, a light source and an optical system, infrared light emitted by the light source forms parallel light beams after passing through the optical system, and the parallel light beams are emitted into the wok from the position above a wok opening of the wok; or the infrared light emitted by the light source passes through the optical system and then is emitted into the frying pan from the upper part of the pan opening of the frying pan in a convergent manner. According to the intelligent cooker, light energy generated by the light source can be emitted into the wok to the maximum extent, the light energy is directly transmitted to food materials in the wok in a radiation mode, the energy conversion efficiency is high, and the heating mode is environmentally friendly.

Description

Technical Field

[0001] The invention relates to cooking equipment, in particular to an intelligent cooking machine which adopts light energy for heating. Background Art

[0002] The heating methods used by existing cooking machines include resistance wire heating and electromagnetic heating, which mainly convert electrical energy into thermal energy or eddy current heat to heat the wok, and then transfer the thermal energy to the ingredients in the wok. This type of heating method has the following shortcomings:

[0003] 1. The heat energy is transferred to the food by heating the wok, and the energy conversion efficiency of this process is low;

[0004] 2. Use resistance wire or electromagnetic heating, which has large thermal inertia;

[0005] 3. The heating device of electromagnetic heating is complicated, and electromagnetic radiation will be generated during the heating process, causing harm to people in the environment and interference to other electrical equipment or devices;

[0006] 4. During resistance heating and electromagnetic heating, the temperature of the pot body is relatively high, resulting in a large amount of oil smoke generated when the fluid material in the pot (such as liquid seasoning or oil, etc.) contacts the inner wall of the pot, causing pollution to the environment. Summary of the invention

[0007] The technical problem solved by the invention is to provide an intelligent cooking machine which can adjust the infrared light emitted by an infrared light source to be emitted into a cooking pot in the form of parallel beams or convergent beams.

[0008] In order to solve the above technical problems, the present invention provides an intelligent cooking machine, including a wok, a light source and an optical system. The infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth; or, the infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth in a converging manner.

[0009] Preferably, the light source is composed of a plurality of point light sources capable of emitting a single-center light beam.

[0010] Preferably, the optical system includes a first lens which is arranged opposite to the point light source and has the same number as the point light source, the optical axis of the point light source is coaxial with the optical axis of the first lens, and the infrared light emitted by the point light source forms a parallel light beam after passing through the first lens.

[0011] Preferably, the first lens is made of a material with an infrared light transmittance higher than 80%, and the first lens is a plano-convex lens or a biconvex lens.

[0012] Preferably, all the point light sources are arranged on the inner side of a pot cover that can be snapped onto the pot mouth.

[0013] Preferably, a second lens is provided between the pot mouth and the first lens, which can make the parallel light beams enter the wok in a converging manner.

[0014] Preferably, all point light sources and their corresponding first lenses are arranged on the inner side of a heat sink in the shape of an annular belt, and the heat sink is arranged above the mouth of the wok in a coaxial manner with the wok; the optical system is also provided with at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, and the shape of the space enclosed by the reflector is a truncated cone; the parallel light beams of the single-center light beams emitted by all point light sources and exiting the first lens are all directed toward the central axis of the wok.

[0015] Preferably, the point light source and the first lens corresponding to the point light source are both provided on the inner side surface of a ring-shaped heat sink and a circular heat sink, the heat sink is arranged on the inner side surface of a pot cover that can be buckled on the pot mouth, and the heat sink is arranged above the pot mouth of the wok in a coaxial manner with the wok and below the heat sink; the optical system is also provided with at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, the space enclosed by the reflector is in the shape of a truncated cone, a reflective film that can reflect infrared light is provided on the side of the truncated cone, and a hollow channel that allows the light emitted by the point light source on the heat sink to enter the wok is provided in the middle of the truncated cone; the parallel light beams of the single-center light beams emitted by all the point light sources and exiting the first lens are all oriented in the direction of the central axis of the wok.

[0016] Preferably, the irradiation area of ​​the parallel light beam in the wok can be adjusted by adjusting the installation angle of the heat sink and the angle or position of the reflector.

[0017] Preferably, the assembly consisting of the light source, all first lenses and the heat sink can be divided into a plurality of standard modules that can be quickly positioned and disassembled, each standard module comprising a set number of point light sources, corresponding first lenses and a heat sink substrate for mounting the point light sources, and the heat sink substrate is a basic unit for dividing the heat sink into several parts.

[0018] Preferably, a fork for stirring the food is provided in the wok, and the fork is mounted on the bottom of the wok in a manner that it can rotate around the axis of the wok relative to the wok.

[0019] The intelligent cooking machine of the present invention uses light energy to directly heat the food in the wok. It uses an optical system to emit a light source in a specific form (such as a parallel light beam or a convergent light) into the wok and then acts on the food in the wok. The light energy generated by the light source can be emitted into the wok to the maximum extent. The light energy is directly transferred to the food in the wok by radiation. The energy conversion efficiency is high and the heating method is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the light path when the light source of the intelligent cooking machine of the present invention is installed using a top light source structure.

[0021] Figure 2 This is a schematic diagram of the light path of another structure when the light source of the intelligent cooking machine of the present invention is installed using a top light source structure.

[0022] Figure 3 It is a schematic diagram of the light path of the light beam entering the wok in a manner parallel to the central axis of the wok when the light source of the intelligent cooking machine of the present invention is installed in a side light source structure.

[0023] Figure 4 It is a schematic diagram of the light path of the light beam entering the wok in a manner of converging toward the central axis of the wok when the light source of the intelligent cooking machine of the present invention is installed in a side light source structure.

[0024] Figure 5 It is a schematic diagram of the light path of the light beam entering the wok in a manner away from the central axis of the wok when the light source of the intelligent cooking machine of the present invention is installed in a side light source structure.

[0025] Figure 6 This is a schematic diagram of the light path when the light source of the intelligent cooking machine of the present invention is installed in combination with a top light source and a side light source.

[0026] In the figure, there are a frying pan 10, a fork 11, a top surface 111, a head end 112, a tail end 113, a pot cover 20, a recess 21, a heat sink 3, a heat sink 4, an infrared LED lamp bead 5, a first lens 6, a second lens 7, a reflector 8, and an exhaust pipe 9. DETAILED DESCRIPTION

[0027] The intelligent cooking machine (hereinafter referred to as cooking machine) of the present invention uses light energy to heat food in a wok 10 , and comprises a wok 10 , a light source, and an optical system that can inject light energy generated by the light source into the wok 10 .

[0028] The light source is composed of a plurality of point light sources arranged in a designed manner. The feature of the present invention is that a single-center light beam (also called a concentric light beam) emitted by a point light source is injected into the wok 10 through an optical system in the form of a parallel light beam or a convergent light beam, or a plurality of single-center light beams with similar light points emitted by a point light source are injected into the wok 10 through an optical system in the form of a nearly parallel light beam or a convergent astigmatic light beam. The purpose is to guide the light emitted by the point light source into the wok 10 with as few reflections and refractions as possible, thereby reducing the light energy loss caused by multiple reflections or refractions of the light emitted by the point light source.

[0029] Compared with the light energy heating method in the prior art, the present invention can maximize the light energy generated by the light source to be injected into the wok 10, and the light energy is directly transferred to the food in the wok 10 by radiation, and its energy conversion efficiency is high and the heating method is environmentally friendly.

[0030] The light source of the present invention is preferably a light source that mainly emits infrared light, such as an infrared LED light source, an infrared small bulb, etc. The infrared light preferably includes a light source that can emit near infrared and mid-infrared.

[0031] The optical system forms the infrared light emitted by the light source into a parallel beam and injects it into the wok 10 from above the wok mouth; alternatively, the infrared light emitted by the light source passes through the optical system and injects it into the wok 10 from above the wok mouth in a converging manner.

[0032] 1. Wok 10

[0033] Since the present invention irradiates light energy directly onto the food, the frying pan 10 used can be a cold pan (the "cold pan" means that the heat energy obtained by the processed food is not conducted from the pan wall, that is, the frying pan 10 is not required to have a high temperature).

[0034] The wok 10 is preferably made of a material with low thermal conductivity, such as ceramic or glass, which has lower thermal conductivity than metal materials, to minimize heat loss. For example, the food heated by light energy dissipates part of the heat energy into the environment through the wok 10.

[0035] The shape of the wok 10 may be cylindrical; or the upper part may be cylindrical, the lower part may be arc-shaped, and the bottom surface may be flat. The specific shape of the wok 10 may be selected according to the form of light entering the wok 10 .

[0036] The diameter of the mouth of the wok 10 is preferably larger than the diameter of the bottom of the wok, so as to facilitate the installation of more light sources and provide more energy for the food.

[0037] Since the light energy radiated onto the food is relatively concentrated, in order to make the light energy incident into the wok 10 be evenly received by all the food, a fork 11 for stirring the food is provided in the wok 10. Figure 1 As shown, the fork 11 is installed at the bottom of the wok 10 in a manner that it can rotate around the axis of the wok 10 relative to the wok 10 (the rotation speed of the fork 11 is proportional to the light energy density incident on the upper surface of the food), and the fork 11 has a long top surface 111, from the head end 112 of the fork 11 to the tail end 113, the top surface 111 is in an arc shape, and the head end 112 of the fork 11 is located at the bottom of the wok 10 (with a rotation speed of the fork 11 being proportional to the light energy density incident on the upper surface of the food). Figure 1 The paper direction is used as a reference, the opening direction of the wok 10 is upward, and the direction opposite to the opening is downward, and the same applies hereinafter), and the tail end 113 extends toward the rear and upward direction in the rotation direction about the axis of the wok 10 (the present invention takes clockwise rotation as an example, and "after" refers to the order of rotation time, and the same applies hereinafter).

[0038] When the fork 11 stirs the food, the fork 11 arches the food at the bottom of the wok 10 like a plow and turns the food along the top surface 111 of the fork 11 from the head end 112 to the tail end 113 of the fork 11, and finally falls into the wok 10 under the action of its own gravity, thereby repeatedly turning the food from the bottom of the wok 10 upward so that the food in the wok 10 can receive light energy more evenly, further ensuring the uniformity of doneness of the cooked dishes.

[0039] 2. Light source

[0040] The light source is composed of a plurality of point light sources that can emit a single-center light beam. The preferred point light source of the present invention is an infrared LED lamp bead 5, and the power of the infrared LED lamp bead 5 is preferably the largest infrared radiation power available on the market. Currently, the 3W infrared LED lamp bead 5 available on the market is preferred, and the size is 1.5mm long and 1.5mm wide.

[0041] A point-type thermal light source with a small volume and a large output power of infrared light components may also be selected as the light source of the present invention, such as a miniature incandescent lamp.

[0042] The structures of the light source used in the present invention are mainly the following three types:

[0043] 1) Top light source

[0044] The top light source is to evenly install all the point light sources on the circular heat sink 4, and the infrared LED lamp beads 5 are electrically connected in a conventional manner, such as Figure 1 and 2 As shown, the heat sink 4 is fixedly connected to the inner side of the pot cover 20 which can be buckled on the pot mouth so that the light source faces the inside of the wok 10, and the heat sink 4 is coaxial with the wok 10.

[0045] The light source is arranged on the pot cover 20, so that the light generated by the light source can be directly emitted into the wok 10 through the optical system, and the structure is simple and the light loss is small.

[0046] 2) Side light source

[0047] The side light source is to set all the point light sources on the inner side of a heat sink 3 in the shape of an annular belt. The heat sink 3 is set above the mouth of the wok 10 in a coaxial manner with the wok 10 and the bottom edge of the heat sink 3 is higher than the mouth of the wok 10. The light-emitting surfaces of all infrared LED lamp beads 5 are facing the central axis of the wok 10.

[0048] Preferably, Figure 3As shown, the heat sink 3 is mounted on the pot cover 20, and a cylindrical recess 21 is recessed upward in the middle of the pot cover 20, and the side of the recess 21 constitutes the heat sink 3. Further, in order to prevent the water vapor or oil smoke in the frying pan 10 from affecting the service life of the infrared LED lamp beads 5 during cooking, a thin transparent plane baffle (not shown in the figure) is covered at the open part of the recess 21. The transparent plane baffle is preferably made of glass with uniform light-transmitting properties. Since the transparent plane baffle is set as a thin layer, when the light emitted by the light source is incident on the transparent plane baffle in the form of a parallel beam through the optical system, its incident angle is zero, or when it is incident on the transparent plane baffle in the form of an approximately parallel beam, the refraction generated can also be ignored because the incident angle is very small.

[0049] The width of the annular edge on the pot cover 20 located on the outer periphery of the recess 21 is only the width of the sealing ring installed on the pot mouth of the wok 10 to achieve the sealing between the pot cover 20 and the wok 10, thereby maximizing the circumferential area of ​​the heat sink 3 to install more infrared LED lamp beads 5.

[0050] Assuming that the diameter of the wok 10 is 264mm and the circumference is 829mm, and the total width occupied by a single infrared LED lamp bead 5 is 5mm (the width includes the width of the infrared LED lamp bead 5 itself and the width of the space reserved for the surrounding gap to install the optical system), a light strip on the circumferential wall can be provided with 166 lamps, each with a power of 3W, and a total output power of 498W. Then, 10 light strips can be set to reach a power of 4980W to meet the heating needs of food. The height occupied by the heat sink 3 installed with 10 light strips is about 5cm (a single light strip occupies 5mm in the height direction).

[0051] Compared with the top light source structure, the structure can arrange a larger area for the infrared LED lamp beads 5, and can achieve a higher power light output. That is, when the size of the wok 10 is determined, the above arrangement can effectively increase the infrared light energy injected into the wok 10.

[0052] 3) Combination structure of top light source and side light source

[0053] like Figure 6 As shown, an annular heat sink 3 and a circular heat sink 4 are provided at the same time, and all point light sources are arranged on the heat sink 3 and the heat sink 4, which can increase the illumination range and enhance the light energy intensity to meet the high energy demand required for high-temperature stir-frying.

[0054] This structure can use the top light source as a backup light source and turn it on at a specific time to meet cooking needs.

[0055] 3. Optical system

[0056] The function of the optical system is to finally inject the single-core light beams emitted by a plurality of infrared LED lamp beads 5 at different positions into the wok 10 in the same specific form (parallel light beam, convergent light beam, approximately parallel light beam or convergent astigmatic light beam).

[0057] like Figure 1-6 As shown, it includes the same number of first lenses 6 as the number of infrared LED lamp beads. The first lenses 6 are installed directly opposite the infrared LED lamp beads 5 and are arranged one by one. The optical axis of the first lens 6 is coaxial with the optical axis of the infrared LED lamp beads 5, that is, the infrared light emitted by the infrared LED lamp beads 5 forms a parallel light beam after passing through the first lens 6.

[0058] The infrared LED lamp bead 5 is set at a position corresponding to when the intersection of the reverse extension line of the maximum emission angle of the infrared LED lamp bead 5 coincides with the object focus of the first lens 6. In this way, the single-center light beam emitted by the infrared LED lamp bead 5 can form a parallel light beam after passing through the first lens 6.

[0059] The first lens 6 can be a plano-convex lens or a biconvex lens, preferably a plano-convex lens. The first lens 6 is made of a material with an infrared light transmittance higher than 80%, such as organic glass, PC or silicone. The first lens 6 of the present invention is preferably made of organic glass.

[0060] Furthermore, to facilitate maintenance and replacement of the light source, the assembly consisting of the light source, all first lenses 6 and the heat sink (the heat sink is a heat sink 3 or a heat sink 4) is divided into a plurality of standard modules that can be quickly positioned and disassembled (rapid positioning and disassembly means that the standard module is accurately installed in a set position through a quick disassembly structure to meet the consistency of the optical path design of the optical system).

[0061] Each standard module comprises a set number of point light sources, a corresponding first lens 6 and a heat dissipation substrate for mounting the point light sources (infrared LED lamp beads 5). The heat dissipation substrate is a basic unit that divides the heat dissipation plate 3 or heat dissipation tray 4 into several parts.

[0062] When a certain lamp bead fails, only the standard module where the problematic infrared LED lamp bead 5 is located needs to be replaced and repaired, without replacing the entire light source, which results in high maintenance costs.

[0063] All first lenses 6 on each standard module can be made into an integral structure.

[0064] For different light source settings, the corresponding optical systems are also different. The specific structures are as follows:

[0065] 1) When only the top light source is set

[0066] like Figure 1As shown, when the light source is the top light source structure, the infrared light emitted by all infrared LED lamp beads 5 passes through the first lens 6 and is directly emitted into the wok 10 from the top of the wok 10 vertically downward through the pot mouth in the form of parallel light beams and is evenly distributed in the wok 10.

[0067] The light source on the pot cover 20 is irradiated into the wok 10 with a parallel light beam, so that the light energy entering the wok 10 can be distributed more evenly, which is conducive to uniform heating of the food.

[0068] When the light source is the top light source structure and the light source needs to be emitted into the wok 10 in a convergent manner, such as Figure 2 As shown, the optical system is further provided with a second lens 7 on the basis of the first lens 6. The second lens 7 is a convex lens and is arranged between the pot mouth and the first lens 6. The second lens 7 is coaxially arranged with the heat dissipation plate 4, and the diameter of the second lens 7 is equal to or slightly larger than the diameter of the heat dissipation plate 4.

[0069] For different woks 10 , the curvature radius of the second lens 7 can be adjusted according to the depth thereof to enable the parallel light beam emitted by the light source through the first lens 6 to be emitted into a set area in the wok 10 in a converging manner at different angles, preferably converging at the bottom of the wok 10 .

[0070] 2) When only side light source is set

[0071] When the light source is the side light source structure, Figure 3-5 As shown, the optical system is further provided with at least one reflector 8 on the basis of the first lens 6, and the space enclosed by the reflector 8 is in the shape of a truncated cone; the reflector 8 is fixedly connected to the inner surface of the top surface of the pot cover 20 in the enclosed area of ​​the heat sink 3 with the bottom surface of the truncated cone facing upward (the diameters of the two bottom surfaces of the truncated cone are larger at the top and smaller at the bottom) and is coaxially arranged with the heat sink 3, and a reflective film that can reflect infrared light is provided on the side of the truncated cone, preferably a metal dielectric reflective film.

[0072] The parallel light beams emitted by all the infrared LED lamp beads 5 on the heat sink 3 through the first lens 6 are basically directed to the central axis of the wok 10, and the optical axis of the infrared LED lamp bead 5 and the optical axis of the corresponding first lens 6 and the axis of the reflector 8 are in the same plane as much as possible, so as to ensure that the light reflected by the reflector 8 into the wok 10 remains as a parallel light beam.

[0073] On the basis of ensuring that the central axis of the heat sink 3, the central axis of the reflector 8 and the central axis of the wok 10 are basically coaxial, the shape of the space enclosed by all the heat sink substrates is set to a hollow truncated cone, that is, the angle between the cut edge of the heat sink 3 in the vertical direction and the central axis of the wok 10 is adjusted, so that the infrared light emitted by all the infrared LED lamp beads 5 on the heat sink 3 can be formed into a parallel light beam by the first lens 6 and then irradiated on the reflector 8 at a set incident angle, and then all the parallel light is reflected into the wok 10 by the reflector 8.

[0074] Similarly, the annular edge of the heat sink 3 can also be set to a vertical state (that is, the annular edge is parallel to the central axis), and then by adjusting the angle between the generatrix of the reflector 8 and the central axis of the wok 10, the light source can be irradiated to different positions in the wok 10 in the form of a parallel beam.

[0075] In this structure, the ways in which the light source enters the wok 10 can be roughly divided into three types:

[0076] 1) The parallel light beam is injected into the wok 10 in a manner parallel to the central axis of the wok 10 .

[0077] 2) The parallel light beam is incident into the wok 10 in a manner of converging toward the central axis of the wok 10 .

[0078] 3) The parallel light beam is incident into the wok 10 in a direction away from the central axis of the wok 10 .

[0079] The following is an example to illustrate:

[0080] For example, the shape of the wok 10 is that the upper part is cylindrical, the lower part is arc-shaped, and the bottom surface is flat. The inner diameter of the wok 10 pot mouth is 268mm, the height of the wok 10 is 240mm (the height of the cylindrical part is 116mm, and the height of the arc part is 124mm), the diameter of the bottom plane of the wok 10 is 103mm, the vertical cut edge of the heat sink 3 is parallel to the central axis, and the diameter of the heat sink 3 is approximately the diameter of the wok 10 pot mouth. When the pot cover 20 is closed on the wok 10 pot mouth, the bottom of the heat sink 3 is parallel to the top edge of the wok 10. The height of the heat sink 3 is 50 mm (the irradiation height of the parallel light beam formed by a row of 10 infrared LED lamp beads 5 through the first lens 6 is 50 mm, that is, the top edge of the parallel light beam coming out of the first lens 6 at the highest point is in the same horizontal plane with the top edge of the heat sink 3; the bottom edge of the parallel light beam coming out of the first lens 6 at the lowest point is in the same horizontal plane with the bottom edge of the heat sink 3), and the vertical height of the parallel light beam after the light source comes out of the first lens 6 and irradiates the reflector 8 is the fixed height of the reflector 8.

[0081] Under the above conditions, when the angle between the generatrix of the reflector 8 (or the extension of the generatrix) and the central axis of the wok 10 is 45 degrees, the light source is incident into the wok 10 in a manner parallel to the central axis of the wok 10 after passing through the first lens 6 and the reflector 8. The position of the light irradiated in the wok 10 can be changed by adjusting the distance between the reflector 8 and the heat sink 3 in the horizontal direction, such as Figure 3 As shown, when the bottom diameter of the reflector 8 is 0 mm (i.e., the reflector 8 is conical), the radius of the halo formed by the light source in the wok 10 is 50 mm, that is, a cylindrical parallel light beam coaxial with the wok 10 is directly facing the bottom of the wok 10 (the radius of the bottom of the wok 10 is 51.5 mm); without changing the height of the reflector 8 in the vertical direction, and keeping the angle between the generatrix of the reflector 8 and the central axis of the wok 10 at 45 degrees, when the bottom diameter of the reflector 8 is gradually increased from 0 mm to 84 mm (i.e., shortening the distance between the reflector 8 and the heat sink 3), the halo injected into the wok 10 moves outward from the center of the wok 10 to the wall of the wok 10 in the form of an annular light band with a width of 50 mm.

[0082] like Figure 4 As shown, when the angle between the generatrix of the reflector 8 and the central axis of the wok 10 is 57.4 degrees and the upper bottom surface diameter of the reflector 8 is the same as the diameter of the heat sink 3, the infrared LED lamp bead 5 at the highest point on the heat sink 3 forms a parallel light beam through the first lens 6 and then reflects through the reflector 8 to face the center position of the bottom of the wok 10. The infrared LED lamp bead 5 at the lowest point on the heat sink 3 forms a parallel light beam through the first lens 6 and then reflects through the reflector 8 into the wok 10. The distance from the intersection of the parallel light beam and the vertical line passing through the central axis of the bottom center of the wok 10 to the center point of the wok 10 is 55 mm, which is greater than the radius of the bottom of the wok 10. Therefore, the light of the infrared LED lamp bead 5 at the lowest point on the heat sink 3 enters the wok 10 and irradiates the arc-shaped edge of the upper point of the bottom of the wok 10. At this time, the light source enters the wok 10 in the form of a parallel light beam and radiates on the entire bottom of the wok 10. The convergence height of the light source in the axial direction of the wok 10 is 119 mm (the height upward from the bottom of the wok 10 as the starting point).

[0083] like Figure 5 As shown, when the angle between the generatrix of the reflector 8 and the central axis of the wok 10 is 36.23 degrees, and the diameter of the upper bottom surface of the reflector 8 is 81.54 mm (i.e., the horizontal distance from the upper bottom surface edge of the reflector 8 to the heat sink 3 is 52.46 mm), the parallel light beam formed by the infrared LED lamp bead 5 at the highest point on the heat sink 3 through the first lens 6 is reflected by the reflector 8 and irradiates the side wall of the wok 10 at a height of 124 mm from the bottom surface of the wok 10 (i.e., the intersection of the cylindrical side and the arc side of the wok 10), that is, the light source irradiates the area below the inner wall of the wok 10 at a height of 124 mm from the bottom surface of the wok 10 (i.e., the arc area of ​​the lower half of the wok 10).

[0084] For woks 10 of different shapes or sizes and different cooking methods, the irradiation position of the light beam in the wok 10 can be achieved by adjusting the installation angle of the heat sink 3 and the angle or position of the reflector 8. For example, when the wok 10 is used for cooking with the mouth facing upward, the ingredients usually gather at the bottom of the wok 10, and it is necessary to concentrate the light at the bottom of the wok 10; when the wok 10 is tilted at a certain angle for cooking, the ingredients usually gather at the lower side wall, and it is necessary to concentrate the light on the side wall of the wok 10.

[0085] 3) When both top light source and side light source are set

[0086] The middle part of the truncated cone is a hollow channel that runs through the bottom and top surfaces thereof, and the diameter of the hollow channel is equal to the diameter of the bottom surface of the truncated cone. When the light source is a combination of a top light source and a side light source, Figure 6 As shown, the infrared LED lamp beads 5 of the top light source are installed on the heat dissipation plate 4 in the area where the hollow channel is vertically projected to the top of the pot cover 20 (and the light emitted by the infrared LED lamp beads 5 of the top light source can be emitted into the wok 10 through the hollow channel); or they are installed on the heat dissipation plate 4 in the top area of ​​the pot cover 20 between the outer periphery of the truncated cone and the heat dissipation plate 3; when both areas exist, the infrared LED lamp beads 5 can be installed in both areas.

[0087] Furthermore, an exhaust pipe 9 is provided on the pot cover 20 , and a smoke inlet of the exhaust pipe 9 is communicated with the hollow channel or is arranged in the top area of ​​the pot cover 20 between the periphery of the truncated cone and the heat dissipation plate 3 .

[0088] Furthermore, in order to improve the safety performance of the cooking machine and facilitate understanding of the working condition of the light source, at least one visible light warning light (not shown in the figure) is provided in each standard module. When the standard module is powered on and working normally, the visible light warning light is on, which can remind the user that infrared light has been emitted to avoid burns; when the visible light warning light is not on after power is turned on, it means that the module is faulty and needs to be inspected and repaired.

[0089] The cooking machine of the present invention uses light energy to heat the food in the cooking pot 10, which has the following advantages:

[0090] 1. It is not picky about pots and pans, which makes up for the defect that induction cookers can only use iron pots and pans, and expands the scope of use;

[0091] 2. There is no radiation range of high-frequency electromagnetic waves. An ordinary induction cooker is equivalent to the radiation of 15 mobile phones. The far-infrared rays of the light wave oven have health-care heating. 87% of the infrared waves are concentrated in 15μm~8μm, the infrared radiation conversion rate is more than 70%, and the infrared energy is 765.9W / m 2Long-term use can play a health care and therapeutic role, especially it can effectively activate tissue cells, promote blood circulation, accelerate metabolism, enhance immunity, and has the effects of deodorization, dehumidification, antibacterial, anti-fatigue, anti-aging, and health care.

[0092] 3. Since light radiation heating is adopted, the wok 10 can be used for cooking with a cold pot.

[0093] 4. The thermal inertia of the light source is low and the energy loss is small.

[0094] 5. The food tastes good, the heat energy is strong and even, ensuring the food is colorful, fragrant and tasty.

[0095] 6. It can cook quickly, and the heat source is concentrated, which saves energy and electricity.

[0096] 7. No open flame and no carbon monoxide is produced.

Claims

1. An intelligent cooking machine, comprising a frying pan, characterized in that: It also includes a light source and an optical system. The infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth; or the infrared light emitted by the light source passes through the optical system and is emitted into the wok from above the wok mouth in a converging manner.

2. The intelligent cooking machine according to claim 1, characterized in that: The light source is composed of several point light sources that can emit a single-center light beam.

3. The intelligent cooking machine according to claim 2, characterized in that: The optical system includes a first lens arranged opposite to the point light source and having the same number as the point light source. The optical axis of the point light source is coaxial with the optical axis of the first lens. The infrared light emitted by the point light source forms a parallel light beam after passing through the first lens.

4. The intelligent cooking machine according to claim 3, characterized in that: The first lens is made of a material with an infrared light transmittance higher than 80%, and the first lens is a plano-convex lens or a biconvex lens.

5. The intelligent cooking machine as claimed in claim 4, characterized in that: All the point light sources are arranged on the inner side of a pot cover which can be buckled on the pot mouth.

6. The intelligent cooking machine according to claim 5, characterized in that: A second lens is also provided between the pot mouth and the first lens, which can make the parallel light beams enter the wok in a converging manner.

7. The intelligent cooking machine according to claim 4, characterized in that: All point light sources and their corresponding first lenses are arranged on the inner side of a heat sink in the shape of an annular belt, and the heat sink is arranged above the mouth of the wok in a coaxial manner with the wok; the optical system is also provided with at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, and the space enclosed by the reflector is in the shape of a truncated cone; the parallel light beams of the single-center light beams emitted by all point light sources and exiting the first lens are all directed toward the central axis of the wok.

8. The intelligent cooking machine according to claim 4, characterized in that: The point light source and the first lens corresponding to the point light source are both provided on the inner side of a ring-shaped heat sink and a circular heat sink. The heat sink is provided on the inner side of a pot cover that can be buckled on the pot mouth. The heat sink is provided above the pot mouth of the wok in a coaxial manner with the wok and below the heat sink. The optical system is also provided with at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink. The space enclosed by the reflector is in the shape of a truncated cone. A reflective film that can reflect infrared light is provided on the side of the truncated cone. A hollow channel that allows the light emitted by the point light source on the heat sink to enter the wok is provided in the middle of the truncated cone. The parallel light beams of the single-center light beams emitted by all the point light sources and exiting the first lens are all oriented toward the central axis of the wok.

9. The intelligent cooking machine according to claim 7 or 8, characterized in that: The irradiation area of ​​the parallel light beam in the wok can be adjusted by adjusting the installation angle of the heat sink and the angle or position of the reflector.

10. The intelligent cooking machine according to claim 9, characterized in that: The assembly consisting of the light source, all first lenses and the heat sink can be divided into a plurality of standard modules that can be quickly positioned and disassembled. Each standard module comprises a set number of point light sources, corresponding first lenses and a heat sink substrate for mounting the point light sources. The heat sink substrate is a basic unit for dividing the heat sink into several parts.

11. The intelligent cooking machine according to claim 10, characterized in that: A fork for stirring ingredients is arranged in the wok, and the fork is installed at the bottom of the wok in a manner that it can rotate around an axis of the wok relative to the wok.

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